Não informado. (1944). Public Health Economics. University of Michigan, School of Public Health.
Citação do estilo Chicago (17ª ed.)Não informado. Public Health Economics. Ann Arbor, Mich: University of Michigan, School of Public Health, 1944.
Citação MLA (8ª ed.)Não informado. Public Health Economics. University of Michigan, School of Public Health, 1944.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.